Sheet-metal wheel



M. LACHMAN. SHEET METAL WHEEL.

* APPLICATION FILED DECJIZ, 1918.

Patented Sept. 28, 1920.

IN [/5 N TOR mt! ZIr/C Lac/4171K,

UNITED STATES PATENT OFFICE.

MAURICE LACI-IMAN, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, T0 BETHLEHEM STEEL COMPANY, OF BETHLEHEM, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SHEET-METAL WHEEL.

Specification of Letters Patent.

Patented Sept. 28, 1920.

Application filed December 12, 1918. Serial No. 266,418.

To all whom it may concern:

Beit known that I, MAURICE LAGHMAN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Sheet- Metal IVheels, of which the following is a specification.

My invention relates to that class of metal wheels in which a disk or disks of sheet metal are employed struck up into form and comprising a rim or felly part, a hub portion and a web or spoke portion integral with one another.

The object of my invention is to provide a wheel of great strength and having considerable thickness in its web or spoke part and constructed from a pair of struck-up disks assembled back to back and properly secured together. The rim part of each disk may be so formed'that in conjunction with the complementary rim part of the companion disk it will form the rim of the wheel or a separate rim may be employed as will be hereinafter described.

In carrying out my invention I prefer to construct the rim portion of each disk in such form as to enable it to resist lateral strain.

In the accompanying drawings:

Figure 1 is a vertical section through the center of the wheel constructed in accord ance with my invention.

Fig. 2 is a plan of one of the disks from which the wheel is constructed.

1 indicates the web or spoke part of the disk terminating at its outer circumference in the laterally extending flange 2 projected radially outward as at 3 to meet the edge of a separate rim 4 having inwardly turned flanges 5. In the web or spoke portion of each disk there are provided the inwardly extending bosses 6 having flat inner walls adapted to engage or seat against one another when the disks are assembled back to back. 7 indicates the hub portion of each disk which, in one or both of them, is constructed as an outwardly projecting boss as shown, to form a hub boss. The companion disk may have a hub part 7 of similar form or said part may be flat.

It will be seen that the disk in the form shown comprises substantially an outwardly projecting hub boss and a laterall projecting circumferential rlm joined y a depressed connecting web portion provided with inwardly projecting bosses. Interposed between the hub parts of the two disks is a hub barrel 8 having inwardly turned flanges 9 which bear against and reinforce the in ner or hub parts of the two disks.

10 indicates reinforcing plates located in the rim 4- between the flanges thereof and suitably seated or supported upon the shoulders of the flanged rims of the two disks. These serve to give added strength to the rim of the completed wheel. The circumferential meta-l edges of the disks meet the edges of the flanges 5 and at this point they may be joined by brazing or otherwise to exclude water or moisture from the interior of the completed wheel.

The disks assembled in the relation shown may be secured together by any means well known in the art as for instance by bolts passing through them near their center and near their circumference. If desired they may be spot-welded to one another on their meeting surfaces.

WVhat I claim as my invention is:

1. A sheet metal wheel comprising a pair of sheet metal plates assembled back to back, said wheel having a hollow rim, a hollow hub, struck up bosses intermediate the hollow rim and hub and connected thereto by offset portions forming a step-like connection between the bosses and rim and hub.

2. A sheet metal wheel comprising a pair of struck-up sheet metal disks each provided with a laterally extending flange terminating in a radially extending edge and combined with a flanged rim having inwardly turned flanges meeting the edges of said disks.

3. A sheet metal wheel comprising a pair of struck-up sheet metal disks each provided with a laterally extending flange terminat ing in a radially extending edge and combined with a flanged rim having inwardly turned flanges meeting the edges of said disks and reinforcing plates extending from edge to edge of the flanged rim and resting upon the circumferential shoulders formed by the laterally extending flanges of the disks.

, Signed at New York, in the county of New York and State of New York, this 11th day of December A. D. 1918.

MAURICE LACHMAN. 

